Osos Sobre Toro

OSOS SOBRE TORO Assessment of Wiluna Uranium Project Report prepared by: Economists at Large Pty Ltd Melbourne, Australia www.ecolarge.com [email protected] Phone: +61 3 9005 0154 | Fax: +61 3 8080 1604 65 Bevan St, Albert Park VIC 3206, Melbourne, Australia Citation: Economists at Large, 2013, Osos sobre Toro: Assessment of Wiluna Uranium Project, a report for Senator Scott Ludlam and the member groups of the Anti-Nuclear Alliance of Western Australia, prepared by Economists at Large, Melbourne, Australia. Authors: Rod Campbell Julie Beatty Disclaimer: The views expressed in this report are those of the authors and may not in any circumstances be regarded as stating an official position of the organisations involved. This report is distributed with the understanding that the authors are not responsible for the results of any actions undertaken on the basis of the information that is contained within, nor for any omission from, or error in, this publication. Economists at Large 2 Executive summary The Wiluna project is presently the most advanced uranium project in West Australia and is poised to commence development pending final approval of its environmental management plan including securing a bond for closure and rehabilitation costs and, importantly, pending financing from a joint venture equity partner. Our modelling of the project economics suggests a positive net present value (NPV) of $A 34Mn, however, this does not include any closure costs for the project. There has been no official closure cost estimate submitted by Toro Energy that we are aware of. We conducted an NPV sensitivity analysis and concluded that: Adding a closure cost to the model based on closed uranium mines in Europe and the USA will almost certainly deliver negative NPV even if incurred at the end of the project in 2029. Applying the low end of the range of global benchmark closure costs of $A10.3/lb U3O8 would result in a nominal closure cost of $A223Mn in 2029, which applied to our Mid case results in NPV $A -2.15Mn. An increase in capital contingency costs (excluding any closure costs) in the model from 13% (assumed by Toro Energy) to 33% would also deliver negative NPV ($A -8.33Mn). A 10% increase in operating costs per annum from the modelled Mid case (excluding any closure costs) would deliver a negative NPV ($A -11.52Mn). Wiluna NPV sensitivity analysis Economists at Large 3 Under our modelling, the principal reason for Wiluna’s high sensitivity to changes in operating or capital costs is owing to the modest resource endowment and the consequent lack of scale or size. As a result, our estimate of the project’s position on the mine production cost curve is perilously high, suggesting the project would be highly vulnerable, indeed unviable, in the event of sustained lower long-term contract prices in the next decade. By any measure, whether on a cash cost or total economic cost basis, our estimates suggest Wiluna is a high-cost project relative to existing mines as well as most greenfield and brownfield projects. Uranium total economic costs 2015 (Nominal USD per pound U3O8) Source: (BMO Capital Markets 2012) and Economists at Large analysis Economists at Large 4 Contents Executive summary .......................................................................................................... 3 Introduction ..................................................................................................................... 6 Key Economic Assumptions .............................................................................................. 8 Uranium price forecasts ........................................................................................................... 8 Inflation and exchange rate forecasts ..................................................................................... 10 Discount rate ......................................................................................................................... 11 Taxes ..................................................................................................................................... 11 Production assumptions ................................................................................................. 12 Revenue estimates ......................................................................................................... 12 Cost assumptions ........................................................................................................... 14 Operating costs ...................................................................................................................... 14 Capital costs ........................................................................................................................... 15 Modelling results ............................................................................................................ 15 Key sensitivities .............................................................................................................. 16 Closure costs .......................................................................................................................... 16 Capital and operating costs..................................................................................................... 18 Discount rate ......................................................................................................................... 19 Wiluna’s competitive stance in the U308 market .............................................................. 19 References ..................................................................................................................... 22 Economists at Large 5 Introduction About Wiluna and Toro Toro Energy, a junior mining company with a suite of five uranium deposits in West Australia, Northern Territory and Namibia, is on the cusp of the financial investment decision (FID), and is seeking financing and final environmental regulatory approval for its Wiluna project in West Australia. The Wiluna project is comprised of two principal deposits, Lake Way and Centipede. Adjacent Toro Energy orebodies including Millipede, Dawson Hinkler Well and Nowthanna could be developed and replace the depleted output from Wiluna. These deposits are part of the Archean Norseman-Wiluna greenstone belt in Western Australia and are located 960 km north-east of Perth in a semi-arid environment with low rainfall. Uranium mineralisation at Wiluna project is found in sheet-like superficial calcrete deposits located at a depth of two to ten metres at or below the water table. These deposits were formed where uranium-rich granites were deeply weathered in a semi-arid climate. Yeelirrie, owned by Cameco, is the world's largest superficial calcrete deposit and is 20 km from Dawson Hinkler Well. Challenges and opposition The Wiluna project has faced challenges on many fronts. Firstly, environmental groups and the WA Greens are opposed to the project based on concerns including: Environmental impacts on the conservation of endemic Tecticornia flora species and Stygofauna species; the identification and assessment of relevant impacts of the full mine water supply for the Lake Way open pit; and inadequate assessment of relevant impacts of proposed creek diversions through uranium pit works at both the proposed Lake Way and the Centipede uranium mine sites. (CCWA 2013) The second major challenge facing the project is financial. Toro Energy is a small, junior mining company that requires $A 269 Mn to develop the mine. We believe this initial capital cost excludes the closure and clean up costs associated with returning the affected area to an environmentally sustainable level. The estimated closure cost is $A 150m to be held as a bond. Most greenfield mines in developed countries have closure costs embedded in their project economics and such bonds are not unusual. This is important as: Research shows that almost 70 per cent of the mines that have closed over the past 25 years in Australia have had unexpected and unplanned closures (Laurence 2002). That is, they have closed for reasons other than exhaustion or depletion of reserves. These include: • economic, such as low commodity prices or high costs that may lead a company into voluntary administration or receivership; • geological, such as an unanticipated decrease in grade or size of the ore body; • technical, such as adverse geotechnical conditions or mechanical/equipment failure; • regulatory, due to safety or environmental breaches; • policy changes, which occur from time-to-time, particularly when governments change; • social or community pressures, particularly from non-government organizations; Economists at Large 6 • closure of downstream industry or markets; and • flooding or inrush. Poorly closed and derelict (orphaned and abandoned) mines provide a difficult legacy issue for governments, communities and minerals companies and, ultimately, tarnish the mining industry as a whole…Poor planning and inadequate financing commonly increase the costs of closure and decrease overall profitability, hampering a company’s ability to develop new projects. (DITR 2006) Area environmental history Public, traditional owner and regulatory concerns around the Wiluna project are influenced by experience with the Yeelirrie uranium deposit, located only 80 km south-west of Wiluna. In the 1980s, Western Mining Corporation (WMC) dug several trial pits at Yeelirrie, extracting about 130,000 tonnes of ore. The pilot processing plant was in Kalgoorlie,

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